Mechanism for locking casement windows, hinged shutters, and the like



. March '10, 1925.

P. LElST-WETTLER MECHANISM FOR LOCKING CASEMENT WINDOWS, HINGED SHUTTERS, AND THE LIKE Filed Deg. 27, 1,923

Patented Mar. 10, 1925.

UNITED. STATES PATENT OFFICE.

PAUL LEIST-WETTLER, OF RODERSDORF, SWITZERLAND.

MECHANISM FOR LOCKING GASEMENT WINDOWS, HINGED SHUTTERS, AN D THE LIKE.

To all whom it may concern:

Be it known that 1, PAUL LEIST-WETT- LER, a citizen of the Republic of Switzerland, residing at Rodersdorf, Canton Solothurn, Switzerland, have invented certain new and useful Improvements in Mechanism for Looking Casement Windows, Hinged Shutters, and the like, of which the following is a specification, reference being had therein to the accompanying drawing. I

The present invention relates to improvements in mechanisms for locking in the open and closed positions double-sashed casement windows, hinged shutters and the like opening towards the outside.

Locking mechanisms of this type having a telescoping transverse rod member which is linked at both ends to the inner side of the two window sashes or shutters and which alters automatically its length when the sashes are open or closed, are already known. With these known mechanisms the length of the transverse rod member in the open and closed position of the sashes must be fixed by special means, for instance by screws.

With the subject matter of the present invention the sashes are conveniently locked '30 in their open and closed positions by a simple turning of the rod member.

A constructional example of the subject matter of the present invention is illustrated on the accompanying drawings, in

which:

Fig. 1 shows the mechanism attached to the closed parts of a hinged shutter,

Fig. 2 shows a horizontal section through the mechanism and the shutter with the latter in the closed position, and in dotted lines with the opened shutter.

In the drawing 1 denotes one leaf of the hinged shutter and 2 is the other leaf, both leaves being rotatable about the hinges 3.

4 is a transverse rod member comprising a tube 5 in which the rods 6 and 7 are slidable in the longitudinal direction. A turning of the tube orelatively to the rods 6 and 7 is prevented in the constructional example shown by pins 8 on the tube 5 projecting into slots 9 provided in the rods 6 and 7. The outer ends of the rods 6 and 7 are provided with an enlargement 10 enclosing a pin 11 arranged parallel to the .55 pins of the hinges 3. Each pin 11 is fixed Application filed. December 27, 1923. Serial No. 683,034.

to the head 12 of a fulcrum pin 13 arranged I at rightangles to the pins of the hinges 3 the pin 13 being mounted in a fastening member 15 fixed to the inner side of the shutter-frame 14. In consequence thereof the transverse rod member 4 may carry out turning movements about an axis which is parallel to its own axis and at right angles to the turning axes of the hinges, i. e. around the axis of the pins 13, as well as around an axis which is parallel to the turning axes of the hinges, i. e. around the axis of the pins 11.

In the positions of the device illustrated in full lines in Figs. 1 and 2 the shutter is closed and the rod member 4 is turned about the pins 13 in the upward direction. If now the member 4 is turned through an angle of 90 out of the position shown in Fig. 1 by moving the knob 17 away from the shutter the pins 11 are brought into the position at right angles to the axes 3 of the hinges. they can no longer swing about the latter in this position whereby any alteration in the length of the rod member 4, i. c. any displacement of the rods 6 and 7 relatively to the tube 5, is rendered impossible so that the parts 1 and 2 of the shutter are locked in their closed position.

If now the shutter has to be opened, the rod member 4, the knob 17 of which is in the horizontal position when the shutter is locked, has to be turned into the position illustrated in Fig. 1, i. e. in the upward direction, and the rod member is then pushed towards the outside. The pins 11 are then in a position parallel to the axes of the pins of the hinges 3 so that they do not prevent a turning of parts'l and 2 of the shutter about the hinges 3. The pins 11 perform thereby a circular motion about the pins of the hinges 3 and pull the rods 6 and? partly out of the tube 5 so that the length of the rod member 4 is increased. As soon as the shutters have reached their open position the transverse rod member 4 is again turned through an angle of 90 about the pins 13 but in the outward direction into the position shown in dotted lines in Fig. 2. Thereby its length is fixed and as now the pins 11 are again in a position at right angles to the axes of the pins of the hinges 3 the shutters are secured in their open position against being closed for instance by the wind.

I claim:

1. A mechanism for locking double-sashed windows, hinged shutters and the like, comprising in combination a telescoping rod member arranged transversely to the hinged sashes, and means fixed to the inner side of said sashes and articulated to the ends of said rod member, said means'permittingm turning movement of the ends of the rod member about two axes standing at right angles to each other, one of said axes being movable parallel to and at right angles to the axes of the hinges.

2. A mechanism for locking double-sashed windows, hinged shutters and the like, comprising in combination, a tube, two pins rotatably mounted in the outer ends of said rods, further pins having their axes at right angles'to the first mentioned pins, the latter being adapted to turn around said further pins, and means fixed to the inner side of the sashes, said further pins being rotatably mounted in said means, whereby a turning motion of the tube together with the rods about the further pins effects the locking of the sashes.

'L' mechanism for locking double-sash'ed "Windows, hinged shutters and the like, comprising in combination, a tube, two rods adapted to slide in said tube, means adapted to prevent a turning motionof the rods relatively to the tube, pins rotatably'mounted in the outer ends of said rods, further pins having their axes at right angles to the first mentioned pins, the latter being adapted to turn around said further pins, and

means fixed to the inner side of the sashes, said further pins'being rotatably mounted in said means, whereby a turning motion of the tube together with the'rods about the further pins effects the locking oi the sashes.

4. A mechanismfor locking casement windows and shutters, which comprises a rigid, extensible member, a fixture at each end of said member secured to a casement leaf, each fixture having two pivots'to one of which said member is pivoted, and the latter pivot being capable of movement about'the other pivot so as to be positioned either substantially parallel to or substantially at right. angles to the hinge pins of the easement hinges.

In testimony whereof I afiix my signature.

PAUL LEIST-WET'ILER. 

